Each group needs:

• shoe box or tissue box with the top removed (note: each group’s boxes should be roughly the same size; have the students determine this during the Decibels and Acoustical Engineering lesson)
• scissors
• glue
• roll of tape

To share with the entire class:

• portable speaker and two smart phones (for decibel testing and sound generation)
• two apps from the App store:
• Tone Generator
• Decibel X: dB, dBA Noise Meter
• bubble wrap (cut into 30 cm x 30 cm pieces)
• steel wool        
• Play-doh            
• parchment paper (cut into 10 cm x 15 cm pieces)
• aluminum foil (cut into 10 cm x 15 cm pieces)
• sponges           
• Styrofoam plates          
• felt (cut into 10 cm x 15 cm pieces)
• notecards         
• painter’s tape   
• cotton balls       
• newspaper       
• computer paper
• straws 
• paper plates       
• craft pom-pomspipe cleaners   
• corkboard
• fleece (cut into 10 cm x 15 cm pieces)
• craft sticks       
• foam sheets     

Note: see Post-Introduction Assessment for more information on how much material students are allowed to use in their design. Depending on the class size, this will determine how much material to purchase.